HALF MOON BAY - 24NM SSW of San Francisco, CA

NDBC station 46012 (HALF MOON BAY) is a moored standard meteorological station at 37.356°N 122.881°W, operated by NDBC. PierMonkey reads its observations straight from the NOAA National Data Buoy Center and republishes them free, with no account required to see current conditions.

It reports significant wave height, dominant and average wave period, wind speed, gusts and direction, air and sea-surface temperature, and barometric pressure; full spectral wave-energy density, which separates overlapping swell trains by period and direction; and tide predictions from the nearest NOAA CO-OPS station.

A 16-day wave and wind forecast from the NOAA GFS-Wave model is available for this location alongside the live readings, so you can see both what the buoy is measuring now and what is expected to arrive.

The nearest surf break PierMonkey covers is Mavericks, roughly 36 km away. The buoy is not necessarily the forecast source for that break, but readings here are a useful cross-check on what is running in the area.